How Common Mutations in Parkinson's Disease Affect LRRK2 Function
Author Information
Author(s): Li Xianting, Wang Qing Jun, Pan Nina, Lee Sangkyu, Zhao Yingming, Chait Brian T., Yue Zhenyu
Primary Institution: Mount Sinai School of Medicine
Hypothesis
The study investigates how common mutations in LRRK2 affect its phosphorylation and binding to 14-3-3 proteins, which may contribute to Parkinson's disease.
Conclusion
Common mutations in LRRK2 reduce its phosphorylation at S935 and impair its binding to 14-3-3 proteins, providing insights into the mechanisms of LRRK2-linked Parkinson's disease.
Supporting Evidence
- LRRK2 is extensively phosphorylated in vivo, and the phosphorylation of specific sites determines 14-3-3 binding.
- Common PD-related mutations of LRRK2 decrease homeostatic phosphorylation levels and impair 14-3-3 binding.
- Protein kinase A (PKA) can phosphorylate LRRK2 at S935, suggesting it regulates LRRK2 function.
Takeaway
This study shows that certain mutations in a protein linked to Parkinson's disease make it harder for that protein to work properly, which could help explain why some people get the disease.
Methodology
The study used affinity purification and mass spectrometric analysis to identify phosphorylation sites and binding proteins of LRRK2 from mouse brain.
Statistical Information
P-Value
p<0.05
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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